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espanolObjetivo: Comprobar si existen diferencias en el grosor de la capa de fibras nerviosas de la retina (CFNR) entre ninos estrabicos y ninos con vision binocular normal. Estas diferencias tambien se estudiaron entre ninos con endotropia y exotropia y entre los ojos dominantes y no dominantes de ninos estrabicos. Metodo: Se incluyeron 31 ninos con endotropia, 17 con exotropia y 32 ninos controles. Se midio la CFNR peripapilar de ambos ojos mediante tomografo optico de coherencia, obteniendose los grosores en 4 sectores: superior (S), inferior (I), nasal (N) y temporal (T). Se determino estadisticamente (p0,05 t de Student). Conclusiones: Segun los casos aqui comparados, no hay variaciones de la capa de fibras nerviosas de la retina que se asocien con la existencia de estrabismo. EnglishObjective: To assess possible differences in the retinal nerve fiber layer (RNFL) thickness between children with strabismus and controls. This study also compared esotropia with exotropia cases, and dominant eyes with non-dominant eyes. Method: 31 children with esotropia, 17 children with exotropia and 32 controls were studied. The peripapillary RNFL average thickness was determined in 4 different areas (inferior, superior, nasal and temporal) using optical coherence tomography. Statistical analysis was performed a) between the strabic children and the control group, b) between the esotropia and exotropia groups, and c) between the dominant eyes and the non-dominant eyes of the strabic children. Results: No statistically significant differences in RNFL thickness were found in any of these statistical comparisons. Conclusions: From this study, no evidence of changes in RNFL thickness, associated to the existence of strabismus, were found.

espanolCaso clinico: Se trata de un varon de 63 anos con antecedentes de hipertension, hipercolesterolemia y tabaquismo, que referia una disminucion del campo visual temporal del OD. Mediante una campimetria de confrontacion, se sospecho la existencia de una restriccion periferica del campo temporal del OD pero tambien del campo nasal del OS. Con perimetria cinetica presentaba un hemianopsia homonima derecha con escotoma periferico excentrico a 50o en ambos ojos. Mediante resonancia magnetica (RM) cerebral se evidencio un infarto poco extenso y limitado, localizado en una region anterior de la cisura calcarina izquierda, concordante con el defecto perimetrico que presentaba el paciente. Discusion: La hemianopsia homonima periferica es una alteracion poco habitual, consecuencia de un infarto parcial de la porcion mas ventral del cortex estriado. La perimetrica cinetica fue la tecnica que mejor delimito los referidos escotomas. EnglishCase report: A 63-year-old male with a history of hypertension, hypercholesterolemia and chronic smoking, presented with a loss of the temporal visual field of right eye (RE). A restriction of the temporal field of RE and also of the nasal field of left eye was clinically suspected when the patient was tested by confrontation. A kinetic perimetry confirmed the existence of a right homonymous hemianopia that was very eccentric in both eyes (beyond the central 50o). Brain magnetic resonance images revealed a well-circumscribed infarction in the ventral portion of the left calcarine fissure that was consistent with the patient´s visual field loss. Discussion: Peripheral homonymous hemianopsia is a rare condition that is caused by a partial infarction of the most ventral striate cortex. Kinetic perimetry provided the most helpful information about the referred scotomas.